получить групповую идентичность (get group identity)
Имя (Name)
getgid, getegid - get group identity
Синопсис (Synopsis)
#include <unistd.h>
gid_t getgid(void);
gid_t getegid(void);
Описание (Description)
getgid() returns the real group ID of the calling process.
getegid() returns the effective group ID of the calling process.
Ошибки (Error)
These functions are always successful and never modify errno.
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008, 4.3BSD.
Примечание (Note)
The original Linux getgid() and getegid() system calls supported
only 16-bit group IDs. Subsequently, Linux 2.4 added getgid32()
and getegid32(), supporting 32-bit IDs. The glibc getgid() and
getegid() wrapper functions transparently deal with the
variations across kernel versions.
On Alpha, instead of a pair of getgid() and getegid() system
calls, a single getxgid() system call is provided, which returns
a pair of real and effective GIDs. The glibc getgid() and
getegid() wrapper functions transparently deal with this. See
syscall(2) for details regarding register mapping.
Смотри также (See also)
getresgid(2), setgid(2), setregid(2), credentials(7)
